/**
 * #      1448
 * 名称   统计二叉树中好节点的数目
 * 链接   https://leetcode-cn.com/problems/count-good-nodes-in-binary-tree
 * 题解   [96](https://leetcode-cn.com/problems/count-good-nodes-in-binary-tree/solution)
 * 通过率 70.8%
 * 难道   中等
 */

